If it is like the Electrical Installation Certificates etc. then it is just an arbitrary number by each individual contractor.Hi all, I'm looking for some advice on what and how the certificate reference number is generated on the pat report
If it is like the Electrical Installation Certificates etc. then it is just an arbitrary number by each individual contractor.

Unique to those which you have produced - but no individual can ever be certain that it is 'unique' in terms of all numbers created by all people. Only some 'centralised' number creation system could guarantee that.Thats it, you can generate it any way you wish, but it MUST be unique to that document ....

No individual can be certain they won't be struck by lightning while walking home from the park either.Unique to those which you have produced - but no individual can ever be certain that it is 'unique' in terms of all numbers created by all people.
If (as we were asked about) it is a Certificate Reference Number (not an 'item reference number') then, yes, I think it has to be unique amongst certificates issued by the same person/company, doesn't it?Does it really need to be a Unique number? Grinder 1 and Drill 1 same number but identified as different items.
Again, you seem to be talking about the identification of tested items, not of the certificates. Those are two entirely different issues.When an organisation has 6000 items then we need some thing a little better, but even then likely depot by depot, common to see MO020 where MO stands for Mold, or G020 where G stands for grinder.

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